is owned by penn national, which also operates hollywood casinos, in charlestown, west virginia, and perryville, maryland. penn national opposes question 7, because as worded, the casino would be awarded to national harbor. penn national wants expanded casino gambling here. this is the winner's circle at rosecroft where live racing returns this weekend, on saturdays and tuesdays. but horse owners and breeders and drivers say if rosecroft doesn't get into the casino gambling business, their futures may be bleak. >> if it doesn't come here, and we don't have it at rosecroft, and if rosecroft doesn't survive or go, it's just another number that's going to have to move out of the state, that i'll have to move my operation, my farm, and my breeding establishment. >> reporter: maryland live in rundel mills which opened this summer expanded yesterday, making it the third largest commercial casino in the country. maryland live is opposed to any new casino in prince george's county, saying it made a huge investment here, relying on maryland lawmakers that it would be the closest casino to the washington